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Inhalation of toxic gases & associated hazards & treatment

A serious hazard to be considered with some liquefied gas cargoes is their toxicity. This is the ability of a substance to cause damage to living tissue, illness, or in extreme cases, death. It may result when a dangerous gas or liquid is breathed in, swallowed or absorbed through the skin. In general terms `toxic' and `poisonous' may be considered to mean the same.



Contact with toxic vapour may cause a burning sensation in your eyes, nose, mouth and other sensitive areas.

All vessels that carry toxic cargoes are supplied with emergency escape sets, with a duration of 15 minutes for every member of the crew. This equipment is intended to permit escape from a toxic gas cloud and must not be used for cargo operations or firefighting. Those involved in handling toxic cargoes are provided with `splash suits' and respirator masks. These masks remove only toxic gases and must not be used for entering spaces that may be oxygen deficient. They must be fitted with a canister that is suitable for the cargo being carried.

Inhalation of toxic gases may cause:

• loss of sense of smell
• headaches
• eye irritation
• loss of consciousness
• breathing to stop
• damage to internal organs
• dizziness and confusion
• death

Skin Absorption may cause:

1. skin irritation
2. skin cancer
3. dermatitis
4. damage to vital organs
5. blood poisoning
6. death

Swallowing may cause

1. vomiting
2. chemical burns to mouth and throat
3. damage to vital organs
4. death

You must be familiar with the hazards and follow instructions and procedures in the Chemical Data Sheets.

Suitably marked decontamination showers and an eyewash should be available on deck in convenient locations. The showers and eyewash should be operable in all ambient conditions.

These cargoes are Acetaldehyde, Ammonia, Chlorine, Diethyl ether, Dimethylamine, Ethylene oxide, Ethylene oxide/Propylene oxide mixtures with an E-o content of not more than 30%, Isoprene, Isopropylamine, Methyl bromide, Monoethylamine, Propylene oxide, Vinyl chloride, Vinyl ethyl ether and Vinylidene chloride.



Related Information:

1. Details of various cargo handling equipment onboard
   
   
2. Openings in Deckhouses and Superstructures



3. Mooring requirements for gas carrier



4. Ship’s Readiness to Move

Cargo Information - physical and chemical properties necessary for the safe containment of the cargo

Means of access to ship - gas carrier guideline

Standards for use of Mobile-phone in gas carrier

Precautions against abnormal weather or other conditions

Dispersal of Vented Cargo Vapours

Openings in Deckhouses and Superstructures

Engine and Boiler Room Precautions

Cargo Machinery Room Precautions

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